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Weather Underground midday recap for Tuesday, April 15, 2014
A cold frontal boundary extended from the Florida Panhandle to New England on Tuesday, while a separate cold front moved across the Pacific Northwest.
A cold front stretched from the eastern Gulf Coast to the Northeast on Tuesday. A warm, moist air mass moved northward ahead of the cold front. As this system interacted with cold air behind the frontal boundary, widespread showers and thunderstorms developed across the Eastern Seaboard. The strongest rain and thunderstorms pushed across the Southeast, as Tallahassee, Fla., reported a midday total of 3.86 inches of rain. Flood warnings were issued across the Northeast as heavy rain caused snow melt to occur. Cold air began to invade the eastern third of the country, which triggered snow showers across the eastern Tennessee Valley, the Ohio Valley and the eastern Great Lakes. Widespread freeze warnings were also issued across the Mississippi Valley, the Tennessee Valley, the Southeast and the Mid-Atlantic due to below normal temperatures behind the aforementioned cold front.
The Plains and the Midwest stayed mostly clear on Tuesday due to high pressure over the southern Plains. The exception to this was in the northern Plains, where a swath of snow showers developed across North Dakota.
Just to the west, a cold front extended across the Pacific Northwest. Scattered showers moved across parts of Washington, Idaho and western Montana, while the northern Rockies experienced high elevation snow showers. The Southwest experienced warm, sunny conditions due to high pressure over the eastern Pacific. Palm Springs, Calif., recorded a midday high of 84 degrees on Tuesday.